Someone is harming the cats on campus so Ryo and the other members of the Singing Club form the kitty patrol to find the culprit.
The culprit is someone Ryo knows.
.ذلك الجاني من معارف ريو
Ryo kannte den Täter.
El culpable es alguien que Ryo conoce.
O culpado é alguém que o Ryo conhece.